What longitude corresponds to the IOR satellite location for Inmarsat-B/C communications?

For Inmarsat-B/C communications, the Inmarsat IOR (Indian Ocean Region) satellite is positioned at 64 degrees East longitude. This location in the Indian Ocean enables the satellite to provide coverage to users within this region, facilitating maritime and aeronautical communication services.

The significance of using this specific longitude is that it allows efficient coverage over a large area of ocean space where vessel traffic is abundant, as well as access to various communication services essential for safety and operational efficiency in maritime environments.

The other longitudes provided in the options are associated with different regions or services and would not be applicable for Inmarsat-B/C communications in the IOR. Thus, 64 degrees East is the correct answer for this particular satellite communication setup.